Physics
Which of the following is preferred for accelerating electrons?

Cyclotron
Van de Graft Generator
Betatron
Synchrotron

ANSWER DOWNLOAD EXAMIANS APP

Physics
It is more difficult to walk on a sandy road than on a concrete road because

sand is soft and concreter is hard.
the friction between sand and feet is less than that between concrete and feet.
the friction between sand and feet is more than that between concrete and feet.
the sand is grainy but concrete is smooth.

ANSWER DOWNLOAD EXAMIANS APP